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Chemistry Final 3 Of 3
Test Description: Chem final
Instructions: Answer all questions to get your test result.
1) Most elements are
A
semiconductors
B
metalloids
C
metals
D
nonmetals
2) How do you know that potassium, an alkali metal, is highly reactive?
A
it conducts electricity
B
it is a soft and shiny metal
C
it has one valence electron
D
it conducts heat
3) elements that share properties of both metals and nonmetals are called?
A
Valences
B
Semiconductors/metalloids
C
Ions
D
Periods
4) Which statement about alkali metals is correct?
A
are usually gases
B
form negative ions with 1- charge
C
They are located in the left most column of the periodic table
D
they are extremely nonreactive
5) Neon is used for filling neon signs. Like other noble elements it has a full octet of electrons which makes the gas
A
solidify at standard pressure and temperature
B
react with other gases in the air
C
unlikely to combine with other elements
D
freeze at room temperature
6) Which is not a family of the periodic table?
A
halogens
B
noble gases
C
anions
D
alkaline-earth metals
7) Which of the rules discussed relates to the spin of the electron in an orbital?
A
Hund's Rule
B
Aufbau Principle
C
Pauli Exclusion
8) Reactive elements of group 17 that are poor conductors
A
halogens
B
noble gases
C
transition metals
D
Alkaline earth metals
9) Highly reactive elements that belong to Group 1
A
metalloids
B
alkali metals
C
halogens
D
noble gases
10) Elements that belong to groups 3-12 and are somewhat reactive
A
alkali metals
B
metalloids
C
alkaline earth metals
D
transition metals
11) Group 2 elements that have two valence electrons
A
noble gases
B
transition metals
C
halogens
D
alkaline earth metals
12) What is the Hund's rule?
A
electrons fill a single orbital before moving to an empty orbital
B
electrons will enter empty orbitals of the same energy level before pairing up in an orbital with an electron already preset
C
the energy level of an electron is dependent on the shell
D
two electrons in the same orbital must have separate spins
13) According to the Aufbau Principle
A
electrons enter orbitals of highest energy first
B
an orbital may be occupied by only 2 electrons
C
electrons enter orbitals of lowest energy first
D
electrons in the same orbital must have opposite spins
14) Would you normally expect neon to form compounds?
A
no, neon has eight electrons in its outermost level and is stable
B
no, neon needs six electrons to fill its outermost level
C
yes, but neon is a rare gas and difficult to obtain
D
yes, neon needs six valence electrons to fill its outermost energy level
15) Which pair of elements would most likely have a similar arrangement of outer electrons and have similar chemical behaviors?
A
Boron and aluminum
B
Helium and fluorine
C
Carbon and nitrogen
D
Chlorine and oxygen
16) Which is a property of the noble gases in group 18?
A
Brittleness
B
High electrical conductivity
C
unlikely to react with other elements
D
Malleability
*select an answer for all questions
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